145023033557 has 2 divisors, whose sum is σ = 145023033558. Its totient is φ = 145023033556.

The previous prime is 145023033523. The next prime is 145023033559. The reversal of 145023033557 is 755330320541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79915897636 + 65107135921 = 282694^2 + 255161^2 .

It is a cyclic number.

It is not a de Polignac number, because 145023033557 - 2¹⁴ = 145023017173 is a prime.

Together with 145023033559, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145023033557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145023033559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72511516778 + 72511516779.

It is an arithmetic number, because the mean of its divisors is an integer number (72511516779).

Almost surely, 2^145023033557 is an apocalyptic number.

It is an amenable number.

145023033557 is a deficient number, since it is larger than the sum of its proper divisors (1).

145023033557 is an equidigital number, since it uses as much as digits as its factorization.

145023033557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189000, while the sum is 38.

The spelling of 145023033557 in words is "one hundred forty-five billion, twenty-three million, thirty-three thousand, five hundred fifty-seven".